作为XML文档，其必要条件是______。
A．可索引化 B．能够描述一定的信息C．以XML为第一个标记开头 D．符合“结构良好的”标准
参考答案：D
It took people as well as time to build the pyramid.
A．a large number of; a great many
B．a great many; a large amount of
C．a great many of; large amounts of
D．a large amount of; a great deal of
下列各项属被动体位的是（）
A．角弓反张
B．翻动体位
C．肢体瘫痪
D．端坐呼吸
E．以上均非
